參數(shù)資料
型號(hào): MC74ACT257DR
廠商: MOTOROLA INC
元件分類(lèi): 編、解碼器及復(fù)用、解復(fù)用
英文描述: ACT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封裝: PLASTIC, SOIC-16
文件頁(yè)數(shù): 5/8頁(yè)
文件大小: 173K
代理商: MC74ACT257DR
MC74AC257 MC74ACT257
5-5
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85
°C
CL = 50 pF
Unit
Fig.
No.
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
3.3
1.5
5.0
8.5
1.0
9.0
ns
3-5
tPLH
In to Zn
5.0
1.5
4.0
6.0
1.0
7.0
ns
3-5
tPHL
Propagation Delay
3.3
1.5
6.0
8.5
1.0
9.0
ns
3-5
tPHL
In to Zn
5.0
1.5
4.5
6.0
1.0
7.0
ns
3-5
tPLH
Propagation Delay
3.3
1.5
7.0
10.5
1.5
11.5
ns
3-6
tPLH
S to Zn
5.0
1.5
5.0
7.5
1.0
8.5
ns
3-6
tPHL
Propagation Delay
3.3
1.5
7.5
10.5
1.5
11.5
ns
3-6
tPHL
S to Zn
5.0
1.5
5.5
7.5
1.0
8.5
ns
3-6
tPZH
Output Enable Time
3.3
1.5
6.5
9.5
1.0
10.5
ns
3-7
tPZH
Output Enable Time
5.0
1.5
5.0
7.5
1.0
8.5
ns
3-7
tPZL
Output Enable Time
3.3
1.5
5.5
9.0
1.0
10.0
ns
3-8
tPZL
Output Enable Time
5.0
1.5
5.0
8.5
1.0
9.5
ns
3-8
tPHZ
Output Disable Time
3.3
1.5
5.5
10.0
1.0
11.0
ns
3-7
tPHZ
Output Disable Time
5.0
1.5
5.0
9.0
1.0
10.0
ns
3-7
tPLZ
Output Disable Time
3.3
1.5
5.5
9.0
1.0
10.0
ns
3-8
tPLZ
Output Disable Time
5.0
1.5
5.0
8.0
1.0
9.0
ns
3-8
* Voltage Range 3.3 V is 3.3 V
±0.3 V.
Voltage Range 5.0 V is 5.0 V
±0.5 V.
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